振動ジャイロを用いた角速度センサによる亀裂進展の監視 [in Japanese] Monitoring of Development of Low Cycle Fatigue Crack by Using Vibratory Gyroscope [in Japanese]
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In this paper, the method of monitoring of development of crack of structural member caused by dynamical load by angular velocity sensors using vibratory gyroscope is proposed. The one story structure having the test column with the artificial crack was oscillated at the base, assuming ground motion. Then, the test column took the repeated bending moment and the crack at the tip of artificial one was devoloped. The two angular velocity sensors using vibratory gyroscope were installed at the same distance from the center of crack. By the measurement of angular velocities, the bending curvature of material were able to be measured. Then, it is possible to measure the development of crack in material undertaking dynamic load, because a development of crack gives the change of moment curvature dramatically. Through the experiment, it was proven that the proposed method is effective to find the development of crack in material taking dynamical load.
- Transactions of the Japan Society of Mechanical Engineers. Series C.
Transactions of the Japan Society of Mechanical Engineers. Series C. 00065(00635), 2750-2755, 1999-07-25
The Japan Society of Mechanical Engineers